amateur vs sciolist

amateur and sciolist both are nouns.

Word	Noun	Adjective	Verb	Adverb
amateur	Yes	Yes	No	No
sciolist	Yes	No	No	No

As nouns, sciolist is a hyponym of amateur; that is, sciolist is a word with a more specific, narrower meaning than amateur:

amateur: someone who pursues a study or sport as a pastime
sciolist: an amateur who engages in an activity without serious intentions and who pretends to have knowledge

Other hyponyms of amateur include bird watcher, birder, dabbler, dilettante, hobbyist.

amateur (noun)	sciolist (noun)
someone who pursues a study or sport as a pastime	an amateur who engages in an activity without serious intentions and who pretends to have knowledge
an athlete who does not play for pay

amateur (adjective)	sciolist (adjective)
engaged in as a pastime
lacking professional skill or expertise